[SD-User] SP DX contest

[iz2eju]

Paul, you wrote: 

For entrants outside Poland, Polish prefixes are 3Z, HF, SN, SO, SP,
SQ, SR.  If you're not sure whether a call is Polish, just type it.
If it's not valid, SD changes its colour to red.

Well, maybe I have made some mistake, but this doesn't happen in my SD (12.15); maybe I have the wrong template or the wrong MLT file ? Can you help before the contest ?
Thank you and 73 from Rik IZ2EJU